I'm pretty tied to Apple for lots of things, and I generally trust them (or I wouldn't be tied this way), but even I won't put myself in a position where a sing

I'm pretty tied to Apple for lots of things, and I generally trust them (or I wouldn't be tied this way), but even I won't put myself in a position where a single vendor can utterly cripple me. My email isn't at iCloud. It's at Fastmail. My iCloud data -- contacts, calendars, etc -- is backed up locally. My login to my Mac isn't run by Apple. Regardless of how much you trust a vendor, you should never create a single point of failure, right?